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Crimewatch Roadshow is back for a new series, and the team need your help to crack the UK's biggest unsolved cases as well as tackle the everyday crimes that could affect any one of us.

The week starts at the new headquarters of Britain's largest police force. Michelle Ackerley is live from New Scotland Yard finding out how the Met are fighting a surge in knife crime in the capital. In the studio, Rav Wilding has the latest on how to avoid becoming a victim of holiday scams.

Each day, former detective Rav Wilding asks viewers for help to solve crimes featured in dramatic reconstructions, identify criminals caught on CCTV and track down wanted faces. Meanwhile, roving reporter Michelle Ackerley travels across the country and goes behind the scenes with forces as they reveal how they' re taking on the crooks.

Last year, viewers' calls helped police make more than 60 arrests for crimes including murder, robbery and rape, and this year the team are hoping for even more. Your call could be all it takes to put an offender behind bars.